Review for CALDAV - Search/Subscribe by Erik O.
Rated 1 out of 5 stars
While Lightning connects calendars without any problems from the ownCloud server, this add-on will not function for searching and subscribing to additional calendars on the same server.
The results from a search of a string matching a known calendar (case respective) return no results much less additional calendars.
....back to adding all calendars one by one...
To create your own collections, you must have a Mozilla Add-ons account.